To delegate your calendar:
- Open your Google Calendar
- From the gear menu, select Settings.
- Click Calendars.
- In the Sharing column for your calendar, click Share this calendar or Shared: Edit settings (whichever appears).
- In the Share with specific people box, type the email address of the person to whom you want to delegate your calendar.
- Click Add Person.
- In the drop-down box under Permission Settings, select Make changes AND manage sharing.
- Click Save.